The best way to get more Underdog's Secret is by farming Th'uban, a monster you can fight at the Arena after unlocking six other Species Conquest monsters. It can drop x1 Underdog's Secret per battle as a common item drop. And for uses, Underdog's Secret is an item that can customize Double Overdrive onto a weapon - an auto-ability which doubles the amount of overdrive a character.. This is a page containing information about the item Underdog's Secret from the game Final Fantasy X (FFX , FF10). Read on to know more about the item including its effect, armor customization, weapon customization, and how to obtain it.
A list of miscellaneous items in Final Fantasy X obtained from fiends, used for customization or other non-battle purposes.. List of items Rikku can mix during her Overdrive. Items in boldface can be purchased from a shop. Others must be obtained through different means. Not every shop sells every item: Grenade and Map are not available until the Mi'ihen Highroad; Distiller items are not available until the Via Purifico; Holy Water is not available until the Calm Lands; and Al Bhed Potion is exclusively from Rin.